Releasing-penholder.



O. MATHISON.

RELEASING PENHOLDER. APPLxcATloN min Nov. x6. Isls.

1,230,312. Patented June 19, 1917.

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OLAF MA'riiIsoN, or onooKsTon, 'ivrrnivnsoral RELEASING-PEN HOLDER.

Specification of Letters Patent.

.Patented June 19, 1917.

Application led November 16, 1915. Serial No. 61,798.

To all whom t may concern:

Be it known that I, OLAF MATHIsoN, citizen of the United States, residing at Crookston, in the county of Polk and State of Minnesota, have invented certain new and useful Improvements in a Releasing-Penholder, of which the following is a specilication.

My invention relates to releasing penholders and contemplates primarily an improved construction, combination and arrangement of parts.

Essentially, the invention may be said to consist of an interiorly threaded ferrule or sleeve; a means tting said ferrule or sleeve and rigid with the pen stock or handle; and an exteriorly threaded nib-holding sleeve designed for threaded engagement with the interiorly threaded rotatable sleeve and for abutting engagement with the member affixed to the pen stock or handle that the former, said nib-holding sleeve, may be moved relatively to the rotatable sleeve in a releasing operation.

In describing my invention in detail reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure l is alongitudinal partly in elevation, holder constructed in present invention;

Fig. 2 is a similar view, the section being taken transversely to that of Fig. l;

Fig. 3 is an end view; and

Fig. 4 is an elevation of the nib-holding sleeve.

Referring now to the drawings by numerals, l designates the stock or handle of my releasing penholder, 2 the interiorly threaded rotatable sleeve, 3 the eXteriorly threaded longitudinally movable .nib-holding sleeve and 4 the member afixed to the sectional view, of a releasing penaccordance with the handle 1 and located interiorly of the rotatable sleeve 2 to prevent rotation of the nibholding sleeve 3.

Flanges 5 are formed upon the member 4 for tting engagement within annular recesses 6 therefor formed interiorly of the rotatable sleeve 2, the mentioned flanges precluding longitudinal movement of the rotatable sleeve relatively to the stock or handle. Said member 4 is substantially U-shape and secured as indicated at 7 to the stock or handle l to serve as a means whereby the parts 2 and 3 are held in proper relation and as a means whereby the former is held against longitudinal movement and the latter against turning movement in a pen releasing operation.

Nib-holding sleeve 3 is split longitudinally as indicated at 8, or if desired, comprises an attaching strip 9, of resilient Inaterial, which, when within the rotatable sleeve 2, bears against the nib or pen point to act as the retaining means therefor.

In operation, and assuming that the nibA or pen point is held in place, it is but necessary that the sleeve 2 be rotated to (by reason of its threaded engagement) cause said nib-holding sleeve to be moved longitudinally of the said iirst mentioned sleeve. The latter, by reason of its split formation, will separate as the threaded portions thereof are moved out of engagement with the interiorly threaded sleeve 2. When thus moved, and separated as stated, the pen point or nib is released.

From the foregoing, taken in connection with the accompanying drawings it will be observed that the member 4 is conjunctively utilizable as a support for the sleeves 2 and 8 and as a means whereby the latter is held against rotation; that the only operation necessary to release the pen point or nib is the rotation of the interiorly threaded sleeve 2; and that the relative arrangement of the various constituent parts of the pen are such as to require a minimum number of such parts and consequently permit of manufacture at a minimum cost.

In reduction to practice, I have found that the form of my invention, illustrated in the drawings and referred to in the above description, as the preferred embodiment, is the most eliicient and practical; yet realizing that the conditions concurrent with the adoption of my device will necessarily vary, I desire to emphasize the fact that various minor changes in details of construction, proportion and arrangement of parts may be resorted to, when required, without sacrificing any of the advantages of my invention, as defined in the appended claims.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a releasing penholder, a handle, a rotatable sleeve immovable longitudinally with respect to said handle, a nib-holding non-rotatable sleeve movable longitudinally with respect to said sleeve, and a means affixed to said handle preventing longitudinal. movement of said first mentioned sleeve and preventing rotation ot the second mentioned sleeve, substantially as described.

2. In a releasing penholder, a handle, an interiorly threaded rotatable sleeve immovable longitudinally With respectto said handle, a nib-holding eXteriorly threaded non-rotatable sleeve movable longiturilinally with respert to said handle through rotation et' said irst mentioned sleeve, and a member allixed to said handle tor engagement with both ot said. sleeves to prevent longitmlinal movement ot the first mein tioned sleeve and rotation o'l the second mentioned sleeve, substantially as described.

3. ln a releasing pen-holder, a handle, an int-eriorly threaded rotatable sleeve immovable longitudinally With respect to said handle, said sleeve having a recess formed therein, an exteriorly threaded nib-holding sleeve mounted Within said rotatable sleeve for fitting engagement therewith, said nibholding sleeve being non-rotatable and movable longitudinally with respect to said handle, and a member allixed to said handle interiorly of said rotatable sleeve to engage therewith and prevent longitudinal 1novement thereof, and to engage With said nibholding sleeve to preclude rotation thereof, substantially as described.

ln testimony7 whereof I attix my signature in presence of two witnesses.

OLAF MATHISON. VWitnesses HANS L. lNoose, MINNIE I. BAE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of atents, Washington, D. C. 

